# US 2022/0037397 A1 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0037397 A1 - Document ID: US20220037397A1 - Status: Published application - Kind: A1 - Application number: 17/502,829 - Filed: 2021-10-15 - Published: 2022-02-03 - Earliest claimed: 2018-08-01 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co. Ltd. - Inventors: Xin Xing LI; Tae Jin KONG; Hee Keun LEE; Hyun Min CHO; Chang Il TAE - Web page: https://patentgrep.com/patent/US20220037397A1 ## CPC - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10H 20/831: characterised by their shape - H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10H 20/856: Reflecting means - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS ## Abstract A display device includes at least one first and second electrodes extending in a first direction, at least one first and second light emitting elements disposed therebetween, a first contact electrode partially covering the first electrode and contacting a first end of the first light emitting element, a second contact electrode partially covering the second electrode and contacting a third end of the second light emitting element, and a third contact electrode disposed between the first and second contact electrodes and contacting a second end of the first light emitting element and a fourth end of the second light emitting element, in which a distance between the first and second electrodes is greater than a longitudinal length of at least one of the first and second light emitting elements, and the first and second light emitting elements are connected in series between the first and second electrodes. ## Claims ### Claim 1 A display device comprising: a first electrode and a second electrode spaced apart from each other, and the first electrode and the second electrode extending in a first direction; a first light emitting element of which a first end is disposed on the first electrode; a second light emitting element of which a first end is disposed on the second electrode; a first contact electrode disposed on the first electrode and electrically contact with the first end of the first light emitting element; a second contact electrode disposed on the second electrode and electrically contact with the first end of the second light emitting element; and a third contact electrode spaced apart from the first contact electrode and the second contact electrode, wherein the third contact electrode is electrically contact with a second end of the first light emitting element and a second end of the second light emitting element. ### Claim 2 (depends on 1) The display device of claim 1, further comprising: a first insulating layer disposed on the first electrode and the second electrode, wherein the first light emitting element and the second light emitting element are disposed on the first insulating layer. ### Claim 3 (depends on 2) The display device of claim 2, further comprising: a second insulating layer disposed on at least portion of the first light emitting element and the second light emitting element; and a third insulating layer disposed on the second insulating layer and overlapping at least one end of the first light emitting and the second light emitting element. ### Claim 4 (depends on 3) The display device of claim 3, wherein the first contact electrode and the second contact electrode are disposed on the third insulating layer, and the third contact electrode is disposed between the second insulating layer and the third insulating layer. ### Claim 5 (depends on 1) The display device of claim 1, wherein the first light emitting element and the second light emitting element comprise: a first semiconductor layer; a second semiconductor layer; an active layer disposed between the first semiconductor layer and the second semiconductor layer; and at least one insulating film covering at least an outer surface of the active layer. ### Claim 6 (depends on 5) The display device of claim 5, wherein the first light emitting element and the second light emitting element further comprise at least one contact electrode layer on end of the first semiconductor layer or the second semiconductor layer, and at least portion of a side surface of the contact electrode layer is covered by the insulating film. ### Claim 7 (depends on 5) The display device of claim 5, wherein the first active layer of the first light element is located at the second end of the first light emitting element, and the first active layer of the second light element is located at the second end of the second light emitting element. ### Claim 8 (depends on 1) The display device of claim 1, further comprising: first electrode line extending in a second direction intersect with the first direction; and a second electrode line extending in the second direction and spaced apart from the first electrode line, wherein the first light emitting element and the second light emitting element are disposed between the first electrode line and the second electrode line. ### Claim 9 (depends on 8) The display device of claim 8, wherein the first electrode line is electrically connected to the first electrode, and the second electrode line is electrically connected to the second electrode. ### Claim 10 (depends on 1) The display device of claim 1, further comprising: a third electrode spaced apart from the second electrode with therebetween the first electrode; a third light emitting element of which a first end is disposed on the third electrode; and a fourth light emitting element of which a first end is disposed on the second electrode, wherein the second contact electrode is electrically contact with the first end of the fourth light emitting element. ### Claim 11 (depends on 10) The display device of claim 10, further comprising: a fourth contact electrode disposed on the third electrode and electrically contact with the first end of the third light emitting element; and a fifth contact electrode spaced apart from the third contact electrode and the second contact electrode; wherein the fifth contact electrode is electrically contact with a second end of the third light emitting element and a second end of the fourth light emitting element. ### Claim 12 (depends on 1) The display device of claim 1, further comprising: a third electrode spaced apart from the first electrode; a fourth electrode spaced apart from the third electrode; a third light emitting element of which a first end is disposed on the third electrode; a fourth light emitting element of which a first end is disposed on the forth electrode; a fourth contact electrode disposed on the third electrode and electrically contact with the first end of the third light emitting element; a fifth contact electrode disposed on the fourth electrode and electrically contact with the first end of the fourth light emitting element; and a sixth contact electrode spaced apart from the fourth contact electrode and the fifth contact electrode, wherein the sixth contact electrode is electrically contact with a second end of the third light emitting element and a second end of the fourth light emitting element. ### Claim 13 (depends on 12) The display device of claim 12, wherein a distance between the first electrode and the third electrode is greater than a distance between the first electrode and the second electrode. ### Claim 14 A display device comprising: a plurality of pair electrodes including first electrodes spaced apart from each other, and the plurality of pair electrodes comprising a first pair electrode and a second pair electrode spaced apart from the first pair electrode; a second electrode disposed between the first pair electrode and the second pair electrode; a plurality of light emitting elements of which one end is disposed on the first electrode or the second electrode; a first contact electrode disposed on the first electrode of pair electrode and electrically contact with the light emitting element; a second contact electrode disposed on the second electrode and electrically contact with the light emitting element; and a third contact electrode spaced apart from the first contact electrode and the second contact electrode and electrically contact with the light emitting element, wherein a distance between the first electrode and the second electrode is smaller than a distance between the first electrodes of the pair electrode. ### Claim 15 (depends on 14) The display device of claim 14, wherein the light emitting element is not disposed between the first electrodes of pair electrode. ### Claim 16 (depends on 14) The display device of claim 14, wherein the plurality of light emitting elements comprise: a first light emitting element of which a first end is disposed on the first electrode of the first pair electrode; and a second light emitting element of which a first end is disposed on the second electrode, wherein the first end of the first light emitting element is contact with the first contact electrode, the first end of the second light emitting element is contact with the second contact electrode, and a second end of the first light emitting element and a second end of the second light emitting element are contact with the third contact electrode. ### Claim 17 (depends on 14) The display device of claim 14, wherein the plurality of light emitting elements comprise: a third light emitting element of which a first end is disposed on the first electrode of the second pair electrode; and a fourth light emitting element of which a first end is disposed on the second electrode and contact with the second contact electrode, and the display device further comprises: a fourth contact electrode disposed on the first electrode of the second pair electrode; and a fifth contact electrode spaced apart from the second contact electrode and the fourth contact electrode. ### Claim 18 (depends on 17) The display device of claim 17, wherein the first end of the third light emitting element is contact with the fourth contact electrode, and a second end of the third light emitting element and a second end of the fourth light emitting element are contact with the fifth contact electrode. ### Claim 19 (depends on 14) The display device of claim 14, further comprising: an electrode line extending in one direction, and the second electrode is electrically connected to the electrode line. ### Claim 20 (depends on 14) The display device of claim 14, further comprising: a first insulating layer disposed on the first electrode and the second electrode; a second insulating layer disposed on at least portion of the light emitting elements; and a third insulating layer disposed on the second insulating layer and overlapping at least one end of the first light emitting and the second light emitting element, wherein the plurality of light emitting elements are disposed on the first insulating layer, the first contact electrode and the second contact electrode are disposed on the third insulating layer, and the third contact electrode is disposed between the second insulating layer and the third insulating layer.